解码视听受限条件下的打靶准备阶段:利用微状态分析调查神经机制

IF 2.3 3区 医学 Q3 CLINICAL NEUROLOGY
Brain Topography Pub Date : 2024-11-01 Epub Date: 2024-07-11 DOI:10.1007/s10548-024-01066-y
Huijie Man, Anmin Gong, Xiaoou Song, Yijing Zhang, Yalan Zhou, Yunfa Fu
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引用次数: 0

摘要

射击是一项受心理状态影响较大的精细运动,射击准备阶段的脑神经活动直接影响射击水平。为了探索视听受限条件下手枪射击准备阶段的脑神经机制,揭示脑活动与射击行为指标之间的内在联系,实验采集了30名射击运动员在正常、昏暗和嘈杂三种条件下进行手枪射击时的脑电信号和射击成绩、持枪稳定性、射击稳定性等7种射击行为。利用脑电微态结合标准化低分辨率脑电磁断层扫描(sLORETA)溯源分析方法,研究了视听受限条件下与正常条件下的微态特征差异,以及不同条件下射击准备阶段的微态特征与行为指标之间的关系。实验结果表明,微状态 1 对应于微状态 A,微状态 2 对应于微状态 B,微状态 4 对应于微状态 D;微状态 3 是一个独特的模板,位于枕叶,其功能是产生 "行动视觉";昏暗条件显著降低了射击者的成绩,而嘈杂条件对射击者成绩的影响较小;在视听受限条件下,微状态特征与正常条件下的微状态特征有显著差异。在视觉和听觉受限条件下,微状态 4 的参数明显下降,而微状态 3 的参数则明显上升;暗淡条件对射手的射击技能要求更高;微状态特征与射击行为指标之间存在显著关系;得出的结论是,为了获得良好的射击成绩,射击者应提高注意力,集中精力调整准直器和目标的中心水平关系,但三种条件下的侧重点略有不同;对完成任务更重要的微状态随时间变化的特征较少;同时得出了与先前研究相似的结论,即:"微状态 3 "参数在视觉和听觉限制条件下显著下降,而 "微状态 3 "参数在视觉和听觉限制条件下显著上升。e.,射击前视觉注意力的增加不利于射击成绩的提高,而微状态 D 与任务完成存在高度正相关。实验结果进一步揭示了射击准备阶段的脑神经机制,提取的神经标记可作为监测手枪射击准备阶段脑神经状态的有效功能指标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Decoding the Preparation Stage of Target Shooting under Audiovisual Restricted Conditions: Investigating Neural Mechanisms Using Microstate Analysis.

Decoding the Preparation Stage of Target Shooting under Audiovisual Restricted Conditions: Investigating Neural Mechanisms Using Microstate Analysis.

Shooting is a fine sport that is greatly influenced by mental state, and the neural activity of brain in the preparation stage of shooting has a direct influence on the level of shooting. In order to explore the brain neural mechanism in the preparation stage of pistol shooting under audiovisual restricted conditions, and to reveal the intrinsic relationship between brain activity and shooting behavior indicators, the electroencephalography (EEG) signals and seven shooting behaviors including shooting performance, gun holding stability, and firing stability, were experimentally captured from 30 shooters, these shooters performed pistol shooting under three conditions, normal, dim, and noisy. Using EEG microstates combined with standardized low-resolution brain electromagnetic tomography (sLORETA) traceability analysis method, we investigated the difference between the microstates characteristics under audiovisual restricted conditions and normal condition, the relationship between the microstates characteristics and the behavioral indicators during the shooting preparation stage under different conditions. The experimental results showed that microstate 1 corresponded to microstate A, microstate 2 corresponded to microstate B, and microstate 4 corresponded to microstate D; Microstate 3 was a unique template, which was localized in the occipital lobe, its function was to generate the "vision for action"; The dim condition significantly reduced the shooter's performance, whereas the noisy condition had less effect on the shooter's performance; In audiovisual restricted conditions, the microstate characteristics were significantly different from those in the normal condition. Microstate 4' parameters decreased significantly while microstate 3' parameters increased significantly under restricted visual and auditory conditions; Dim condition required more shooting skills from the shooter; There was a significant relationship between characteristics of microstates and indicators of shooting behavior; It was concluded that in order to obtain good shooting performance, shooters should improve attention and concentrate on the adjustment of collimator and target's center leveling relation, but the focus was slightly different in the three conditions; Microstates that are more important for accomplishing the task have less variation in their characteristics over time; Similar conclusions to previous studies were obtained at the same time, i.e., increased visual attention prior to shooting is detrimental to shooting performance, and there is a high positive correlation with microstate D for task completion. The experimental results further reveal the brain neural mechanism in the shooting preparation stage, and the extracted neural markers can be used as effective functional indicators for monitoring the brain state in the shooting preparation stage of pistols.

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来源期刊
Brain Topography
Brain Topography 医学-临床神经学
CiteScore
4.70
自引率
7.40%
发文量
41
审稿时长
3 months
期刊介绍: Brain Topography publishes clinical and basic research on cognitive neuroscience and functional neurophysiology using the full range of imaging techniques including EEG, MEG, fMRI, TMS, diffusion imaging, spectroscopy, intracranial recordings, lesion studies, and related methods. Submissions combining multiple techniques are particularly encouraged, as well as reports of new and innovative methodologies.
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